To calibrate your sensor, using outdoor calibration (recommended):

  1. Leave your sensor outside for 10 minutes, away from any CO2 sources (for example, yourself), also keep it away from wind. 
  2. Hold down the right button on your sensor until the LED breathes green.  Wait 5 minutes (leave it alone and come back later).  That's it!  Sensor will resume its previous state automatically when calibration is complete.

 

To calibrate your sensor with a calibration gas:

Procure Equipment:

  • 1000ppm CO2 calibration gas
  • regulator (.1-.5 lpm)
  • tubing
  • funnel

Calibrate with calibration gas:

  1. Place sensor in upside-down funnel.  Plug in sensor.
  2. Turn on gas.
  3. Press right button to wake device.
  4. After waking, press and hold both buttons on sensor until LED alternates between green and orange.
  5. Wait 5 minutes (leave it alone and come back later).  That's it! Sensor will resume its previous state automatically when calibration is complete.